Tzatziki is a yogurt-cucumber sauce or dip which is often served in greek restaurants in germany (where it is spelled tsatsiki). In addition to being served in restaurants, tzatziki and has found its way into german backyard barbecue and party culture. This yogurt-cucumber mixture is fresh, savory and easy to make. Its a good accompaniment to spicy and/or grilled meats, fried eggplant or zucchini and its tasty on falafel and gyros. In germany, it's eaten on bread. The yield for this tzatziki recipe is for two, but it easily can be doubled or tripled.